By a News Reporter-Staff News Editor at Biotech Week -- New research on Pesticides is the subject of a report. According to news reporting originating from Wuhan, People's Republic of China, by NewsRx correspondents, research stated, "A novel multianalyte electrochemical immunosensor based on the assembly of patterned SWNTs on glassy carbon (GC) substrates was developed for simultaneous detection of endosulfan and paraoxon. Based on aryldiazonium salt chemistry, forest of SWNTs can be patterned on GC substrates by C-C bonding using micro contact printing (MCP), which provides an interface showing efficient electron transfer between biomolecules and electrodes."
Our news editors obtained a quote from the research from Central China Normal University, "Then redox molecules FDMA and PQQ can be attached to the SWNTs, respectively followed by the attachment of specific epitopes and antibodies. The modified sensing surfaces were characterized by XPS, SEM, AFM and electrochemistry. Based on the current change of specific redox probes, the fabricated immunosensor array can be used for simultaneous detection of endosulfan and paraoxon by a displacement assay. In phosphate buffer solution (50 mM, pH 7.0), there is a linear relationship between electrochemical signal of FDMA and the concentration of endosulfan over the range of 0.05-100 ppb with a detection limit of 0.05 ppb; the linear range between electrochemical signal of PQQ and the concentration of paraoxon is 2-2500 ppb with a detection limit of 2 ppb."
According to the news editors, the research concluded: "The immunosensor array demonstrates high repeatability, reproducibility, stability and selectivity for the detection of endosulfan and paraoxon."
For more information on this research see: A multianalyte electrochemical immunosensor based on patterned carbon nanotubes modified substrates for detection of pesticides. Biosensors & Bioelectronics, 2014;52():360-366. Biosensors & Bioelectronics can be contacted at: Elsevier Advanced Technology, Oxford Fulfillment Centre The Boulevard, Langford Lane, Kidlington, Oxford OX5 1GB, Oxon, England. (Elsevier - www.elsevier.com; Biosensors & Bioelectronics - www.elsevier.com/wps/product/cws_home/405913)
The news editors report that additional information may be obtained by contacting G.Z. Liu, Cent China Normal Univ, Coll Chem, Minist Educ, Key Lab Pesticide & Chem Biol, Wuhan 430079, People's Republic of China. Additional authors for this research include W.Q. Guo and D.D. Song (see also Pesticides).
Keywords for this news article include: Asia, Wuhan, Chemistry, Endosulfan, Fullerenes, Pesticides, Agrochemicals, Benzothiepins, Nanotechnology, Electrochemical, Carbon Nanotubes, Emerging Technologies, People's Republic of China
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